PIC18F57Q43-E/6LX - 128KB Flash 8-bit MCU, 64MHz, 48-VQFN | Microchip
料号： PIC18F57Q43-E/6LX ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.49 | $4.49 |
| 10 | $4.04 | $40.40 |
| 100 | $3.55 | $355.00 |
| 500 | $3.15 | $1,575.00 |
| 1,000 | $2.85 | $2,850.00 |
PIC18F57Q43-E/6LX 概述
An 8-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU, non-volatile program memory, volatile data memory, and configurable peripherals on a single silicon die. The PIC18-Q43 family specifically augments this classic architecture with Core Independent Peripherals (CIPs), six Direct Memory Access (DMA) controllers, Configurable Logic Cells (CLCs), and a 12-bit Analog-to-Digital Converter with Computation (ADCC). These features allow real-time control tasks such as capacitive touch sensing, power conversion, and motor control to be offloaded from the CPU into dedicated hardware, reducing firmware complexity and latency.
Key features of the PIC18F57Q43-E/6LX include three 16-bit dual PWMs providing six PWM outputs, an 8-bit DAC, multiple comparators with a Zero-Cross Detect (ZCD) module, fixed voltage references of 1.024 V, 2.048 V and 4.096 V, five UARTs (one supporting LIN/DMX/DALI), and vectored interrupts with programmable priority. The on-chip DMA engine moves data between peripherals and memory without CPU intervention, freeing instruction cycles for application logic.
The device architecture is built on Microchip's enhanced PIC18 Harvard pipeline, with selectable internal oscillator blocks, multiple I/O ports, and functional safety (FuSa) features for safety-critical designs. Peripherals are interconnected through the Peripheral Pin Select (PPS) system, allowing most digital functions to be remapped to a wide range of physical pins.
Typical applications include industrial control, IoT edge nodes, consumer appliances, building automation, automotive body and lighting subsystems, and USB-to-UART bridges when paired with an external transceiver. The combination of high Flash density and CIPs also suits advanced sensor hubs and BLDC/PMSM motor drive controllers.
When designing with this part, pay attention to decoupling: place 100 nF and 1 uF ceramics adjacent to the VDD/VSS pairs, route the exposed pad to a continuous ground plane, and confirm unused I/O pins are configured as outputs low or as inputs with internal pull-ups. The functional safety documentation set should be reviewed for any IEC 61508 or ISO 26262 target.
This page synthesizes distributor pricing, parametric alternatives, and practical design considerations for the PIC18F57Q43-E/6LX that go beyond the manufacturer datasheet alone.
直接替换替代料： PIC18F57Q43-E/6LX ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F57Q43-E/6LX （相同外形与封装尺寸） ——差异在于 ADC, Core, DAC, Operating Temperature Range, DMA Controllers.
快速对比工具——选择替代料号进行并排对比：
PIC18F56Q43-E/6LX
✅ 直接替换✓ 有现货
$1.42 / 个
查看数据手册 →PIC18F57Q43-I/6LX
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18F57Q43T-E/6LX
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F57Q43-E/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F47Q43-E/6LX
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18F57Q43-E/6LX 最大额定值与电气特性
| Architecture | PIC18 8-bit Harvard RISC |
| Core | PIC18 enhanced core with CIPs |
| Program Memory (Flash) | 128 KB |
| Data Memory (SRAM) | 8 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Clock | 64 MHz |
| 工作温度范围 | -40C to +125C (E suffix, extended) |
| 封装 | 48-pin VQFN (6x6 mm) |
| 安装类型 | Surface Mount |
| ADC | 12-bit ADC with Computation (ADCC) |
| DAC | 8-bit DAC |
| Comparators | Multiple comparators with ZCD |
| PWM | Three 16-bit dual PWMs (six PWM outputs) |
| DMA Controllers | Six DMA channels |
| CLC | Configurable Logic Cells |
| UART | 5 (one supports LIN/DMX/DALI) |
| Voltage Reference | 1.024 V / 2.048 V / 4.096 V fixed |
| Functional Safety | FuSa-ready |
| RoHS 状态 | Compliant |
PIC18F57Q43-E/6LX 48-pin vqfn (6x6 mm) 引脚配置指南
PIC18F57Q43-E/6LX（48-pin vqfn (6x6 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC18F57Q43-E/6LX.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC18F57Q43-E/6LX 适用于 7 应用s: Industrial Control and Automation, BLDC and PMSM Motor Control, IoT Edge Nodes and Sensor Hubs, Automotive Body and Lighting, Consumer Appliance UI with Capacitive Touch, Functional Safety and Medical Monitoring, Building Automation and HVAC Control.
Industrial Control and Automation
The PIC18F57Q43-E/6LX fits industrial control applications because it combines 128 KB Flash with Core Independent Peripherals that deterministically handle encoder inputs, PWM-driven actuators and serial field-bus communication without CPU loading. At 64 MHz it executes a typical 1 kHz control loop with margin, while six DMA channels move ADC samples and PWM update values between memory and peripherals in the background. The 12-bit ADCC with hardware averaging reduces software burden for analog front ends such as 4-20 mA loop sensing, and the 8-bit DAC plus comparators support closed-loop current limiting directly in hardware. The -40C to +125C extended temperature grade and the 48-VQFN footprint suit DIN-rail mounted PLC I/O modules, motor contactor drivers and small inverter boards where board area is constrained.
推荐
BLDC and PMSM Motor Control
Three-phase brushless DC and permanent magnet synchronous motor drives are a natural fit for the PIC18F57Q43-E/6LX thanks to its three 16-bit dual PWMs delivering six complementary PWM outputs with programmable dead-band. The 12-bit ADCC with computation can sample phase currents and back-EMF synchronously to the PWM period, while the on-chip comparators feed the Zero-Cross Detect module for sensorless rotor-position estimation. The six DMA controllers keep ADC double buffers and PWM update registers flowing without CPU intervention, leaving cycles for the field-oriented control law. The 48-VQFN's exposed thermal pad helps dissipate heat from the MCU when driving gate drivers such as the MCP8024 in a half-bridge power stage.
推荐
IoT Edge Nodes and Sensor Hubs
Battery-powered IoT edge nodes benefit from the PIC18F57Q43-E/6LX's eXtreme Low Power (XLP) technology and the DMA-driven ADCC, which can wake the core, take multiple samples, average them and trigger an interrupt without software loops. The 8 KB SRAM buffers sensor frames before the radio wakes, and the five UARTs (one LIN/DMX/DALI capable) talk to RS-485, BLE modules or LoRa transceivers. The Configurable Logic Cells can implement glue logic between a sensor's interrupt pin and a wake event, removing external gates from the BOM. Combined with the 128 KB Flash for OTA staging and the 48-VQFN's small 6x6 mm footprint, the device suits environmental sensors and smart-meter edge boards.
推荐
Automotive Body and Lighting
Body control modules and LED lighting drivers use the PIC18F57Q43-E/6LX because its 16-bit PWMs and comparators implement LIN-addressed LED dimming and tail-light current regulation without external FET drivers. The Zero-Cross Detect module synchronizes control to AC mains in solid-state relay replacements, while the 12-bit ADCC drives RGB color-mixing loops in ambient lighting. Five UARTs serve LIN body bus, OBD diagnostics and DMX-style stage lighting simultaneously. Note that the standard -E/6LX part is industrial-grade; designers targeting AEC-Q100 qualification should evaluate the automotive-graded PIC18F57Q43-E/6LX automotive variants or pair with an external CAN-FD transceiver for full in-vehicle networking.
推荐
Consumer Appliance UI with Capacitive Touch
User interfaces for white goods and small appliances map cleanly onto the PIC18F57Q43-E/6LX through the mTouch CVD peripheral built into the 12-bit ADCC. Up to 24 touch channels can be scanned with hardware averaging and threshold comparison, replacing mechanical keypads while the DMA keeps ADC traffic off the core. The 128 KB Flash hosts complex UI graphics state machines, and the 16-bit PWM fades LED backlights smoothly. The 48-VQFN's small footprint fits behind glass overlays where space is constrained, and the extended temperature grade tolerates oven-adjacent heat in kitchen appliances.
推荐
Functional Safety and Medical Monitoring
Functional safety subsystems benefit from the FuSa-ready PIC18F57Q43-E/6LX, which ships with a documented safety manual, FMEDA and diagnostic libraries for IEC 61508 designs. Its windowed watchdog, hardware CRC/Scan and dual-core-independent peripherals allow fault detection on the silicon itself, while the 12-bit ADCC delivers redundant oversampled measurements for patient monitoring peripherals. The 8 KB SRAM and 1 KB EEPROM safely store calibration constants and diagnostic logs. For ISO 26262 targets the part's failure rates and diagnostics should be cross-checked with Microchip's functional safety package; for IEC 61508 SIL-2 designs the PIC18F57Q43-E/6LX is a strong candidate when paired with external watchdog and voltage supervision.
推荐
Building Automation and HVAC Control
Building automation controllers leverage the PIC18F57Q43-E/6LX's RS-485-capable UART, 12-bit ADCC and 16-bit PWM channels to read temperature, humidity and CO2 sensors and drive damper actuators. Six DMA channels manage continuous ADC streaming from multi-zone sensors, while the Configurable Logic Cells implement standalone edge detection on motion sensors to wake the core. The 5 UARTs serve RS-485 Modbus, BACnet over MS/TP, and a DMX lighting link simultaneously. The 48-VQFN's small size fits inside wall-mounted sensor pods and small DIN enclosures common in HVAC retrofits.
推荐
推荐产品汇总
工程参考数据： PIC18F57Q43-E/6LX ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F56Q43-E/6LX | PIC18F57Q43-I/6LX | PIC18F57Q43T-E/6LX | PIC18F47Q43-E/6LX |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-VQFN (6x6 mm) | 48-VQFN (6x6 mm) - same | 48-VQFN (6x6 mm) - same | 48-VQFN (6x6 mm) - same | 40-VQFN (different land pattern) |
| Flash Memory | 128 KB | 64 KB | 128 KB | 128 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Temperature Range | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) |
| DMA Controllers | 6 | 6 | 6 | 6 | 6 |
| Approx. Unit Price (1 pc) | $4.49 | $4.04 | $4.49 | $4.49 | $3.65 |
关键差异点
- Highest-density Flash option in the PIC18-Q43 VQFN-48 family （对比 PIC18F56Q43-E/6LX)
- Extended -40C to +125C operating temperature （对比 PIC18F57Q43-I/6LX)
- Functional safety documentation and CIPs in the same MCU （对比 PIC18F47K42-I/PT)
设计说明
Decoupling: place one 100 nF X7R ceramic as close as possible to each VDD/AVDD pin pair and a bulk 1 uF to 4.7 uF ceramic adjacent to the device. The 48-VQFN exposed pad is the primary electrical ground and thermal path; stitch it to the inner ground plane with at least nine thermal vias (0.3 mm drill, 0.5 mm pitch) for stable operation under load.
Layout: keep high-speed digital traces (PWM, UART clocks) at least 5 mm away from analog ADC traces to minimize coupled noise. Route the analog AVSS pin to a quiet ground island that joins the main ground at one point near the MCU's exposed pad. Place the quartz crystal (if used) within 5 mm of OSC1/OSC2 with a guard ring tied to ground.
Configuration: leaving unused I/O pins as floating inputs can cause excessive current draw in CMOS designs; configure unused pins as outputs low or as inputs with internal weak pull-ups enabled. The PPS system lets most digital peripherals be remapped but introduces latency if frequently reconfigured during runtime, so lock pin maps early in firmware.
Estimated: at 64 MHz CPU clock and full peripheral activity on a 4-layer 1 oz copper 48-VQFN board, junction-to-ambient thermal resistance is approximately 30 C/W. At 5 V VDD with full DMA and ADCC activity the chip dissipates roughly 90 mW; ensure ambient temperature stays within -40C to +125C after derating. The exposed pad must be soldered for this thermal budget to be valid.
PWM: the 16-bit PWM outputs can slew above 25 mA drive strength, but for capacitive loads above 50 pF place a 33 ohm series resistor to control edge rates and limit ground bounce. The 12-bit ADCC achieves its noise floor only when the input source impedance is below 1 kohm; add an external op-amp buffer for higher-impedance sensors.
合规信息
RoHS compliant per Microchip product page. Standard -E part is industrial-grade; AEC-Q100 qualified variants exist in the automotive PIC18F57Q43 family for in-vehicle designs.
